Schedule of Change in Unrealized Gains and Losses Included in Net Income for Level Three Assets and Liabilities Held (Detail) - Predecessor - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Inputs Gain Loss [Line Items]
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in earnings	$ 18,525	[1]	$ 43,244	[2]
Derivatives embedded in life and annuity contracts
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Inputs Gain Loss [Line Items]
Gains (losses) for Level 3 liabilities still held at the balance sheet date, included in earnings	$ 18,525		$ 43,244

[1] The amount attributable to derivatives embedded in life and annuity contracts was reported as follows: $17.6 million in interest credited to contractholder funds and $946 thousand in contract benefits. These amounts were ceded in accordance with the Company's reinsurance agreements.

[2] The amount attributable to derivatives embedded in life and annuity contracts was reported as follows: $33.0 million in interest credited to contractholder funds and $10.2 million in contract benefits. These amounts were ceded in accordance with the Company's reinsurance agreements.